org.antlr.v4.runtime.atn

Class CodePointTransitions

java.lang.Object

org.antlr.v4.runtime.atn.CodePointTransitions

public abstract class CodePointTransitions
extends Object

Utility class to create AtomTransition, RangeTransition, and SetTransition appropriately based on the range of the input. To keep the serialized ATN size small, we only inline atom and range transitions for Unicode code points <= U+FFFF. Whenever we encounter a Unicode code point > U+FFFF, we represent that as a set transition (even if it is logically an atom or a range).

Constructor Summary

Constructors

Constructor and Description
CodePointTransitions()

Method Summary

Modifier and Type	Method and Description
static Transition	createWithCodePoint(ATNState target, int codePoint) If codePoint is <= U+FFFF, returns a new AtomTransition.
static Transition	createWithCodePointRange(ATNState target, int codePointFrom, int codePointTo) If codePointFrom and codePointTo are both <= U+FFFF, returns a new RangeTransition.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CodePointTransitions

public CodePointTransitions()

Method Detail

createWithCodePoint

public static Transition createWithCodePoint(ATNState target,
                                             int codePoint)

If codePoint is <= U+FFFF, returns a new AtomTransition. Otherwise, returns a new SetTransition.

createWithCodePointRange

public static Transition createWithCodePointRange(ATNState target,
                                                  int codePointFrom,
                                                  int codePointTo)

If codePointFrom and codePointTo are both <= U+FFFF, returns a new RangeTransition. Otherwise, returns a new SetTransition.